powerpc: mpc85xx: Improve Work-around for Erratum A005125

Work-around for Erratum A005125 must be applied to all cores.

Signed-off-by: Yoshihisa Morizumi <yoshi.morizumi@jp.fujitsu.com>
Signed-off-by: Takuma Ueba <ueba.takuma@jp.fujitsu.com>
Reviewed-by: York Sun <york.sun@nxp.com>

arch/powerpc/cpu/mpc85xx/release.S

@@ -26,6 +26,13 @@
 	.globl	__secondary_start_page
 	.align	12
 __secondary_start_page:
+#ifdef CONFIG_SYS_FSL_ERRATUM_A005125
+	msync
+	isync
+	mfspr	r3, SPRN_HDBCR0
+	oris	r3, r3, 0x0080
+	mtspr	SPRN_HDBCR0, r3
+#endif
 /* First do some preliminary setup */
 	lis	r3, HID0_EMCP@h		/* enable machine check */
 #ifndef CONFIG_E500MC